Phosphazene base-catalyzed intramolecular cyclization for efficient synthesis of benzofurans via carbon–carbon bond formation
作者:Chikashi Kanazawa、Kengo Goto、Masahiro Terada
DOI:10.1039/b913588j
日期:——
An organic superbase, phosphazene P4-(t)Bu, functioned as an active catalyst for intramolecular cyclization of o-alkynylphenyl ethers via carbon-carbon bond formation to provide an efficient synthetic method for 2,3-disubstituted benzofurans derivatives under mild reaction conditions without the need for a metal catalyst.
有机超碱磷腈P4-(t)Bu用作通过碳-碳键形成邻炔基苯基醚分子内环化的活性催化剂,为2,3-二取代苯并呋喃衍生物的温和反应条件提供了一种有效的合成方法,而无需温和的反应条件需要金属催化剂。